Abstract
The regulation of programmed cell death in the nervous system of vertebrates is a complex mechanism aimed to remove superfluous or damaged cells. Epileptic seizures can lead to an activation of pathways resulting in neuronal cell death. B-vitamins might have a neuroprotective potential reducing cell death following appropriate stimulation. Here, the role of the B-vitamins B1 (thiamine), B6 (pyridoxine), and B12 (cobalamine) was investigated in a mouse model of experimental epilepsy induced by kainate. B-vitamin pre-treated animals showed a significantly reduced epileptic score during the first 15 min after kainate injection. The molecular response to kainate showed a bi-phased time course with early induction of Bcl-2 expression within 12 h and a second induction after 7 days of kainate exposure. B-vitamin pre-treatment resulted in significant higher Bcl-2 expression in control animals (no kainate) and at 12 h within the early phase. Bcl-2 expression was not affected by B-vitamins within the second phase. BAX expression was not significantly influenced during the whole experiment. Three days after kainate stimulation, the number of TdT-mediated dUTP-biotin nick end labeling-positive cells in the hippocampal region was lower in B-vitamin-treated animals. Therefore, B-vitamin pre-treatment may attenuate the response to epileptic stimulation.
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The authors thank Inge Keller for her expert technical assistance. This work was supported by Merck KGaA, Darmstadt, Germany.
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Tamer Rabie and Wolfgang Mühlhofer, as well as Hugo H. Marti and Johannes Schenkel contributed equally to this paper.
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Rabie, T., Mühlhofer, W., Bruckner, T. et al. Transient Protective Effect of B-Vitamins in Experimental Epilepsy in the Mouse Brain. J Mol Neurosci 41, 74–79 (2010). https://doi.org/10.1007/s12031-009-9286-4
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DOI: https://doi.org/10.1007/s12031-009-9286-4